brain and insulin

I am interested in talking with anyone or specific groups that are looking
at insulin and its related effects on brain glucose metabolism.In
particular brain region specific effects are of most interest as I have
results showing that insulin after given to rats for 4 days in steady state
conditions causes area related effects in areas such as the locus coeruleus
and the dentate gyrus.Has anyone knowledge of a good reference point or raw
data of possible connections between these areas?
PJD.